Elbaite and Gahnospinel Physical Properties

Elbaite

Gahnospinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.10

3.65-4.55

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

None, but may exhibit slight parting

1.7 Mohs Hardness

7.5-8

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Elbaite and Gahnospinel Chemical Formula

While comparing Elbaite and Gahnospinel physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Elbaite and Gahnospinel chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Elbaite and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.